Dallas, TX 75138 Frost Dates
Dallas, TX: when does the frost end?
Around 03/02 is the usual last spring frost, about 186 days away. Fall's first freeze usually shows up around 11/29, roughly 272 days after the last spring frost.
Zone 8b (15 to 20°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Dallas, not a forecast for this year.
Stretching the season past the first frost
With roughly 13 weeks until Dallas's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 03/02 isn't a guarantee
03/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/10 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/19 and only about 1 year in 10 sees frost after that.
Dallas against the rest of the dataset
At roughly 272 frost-free days, Dallas places 5,240 of 40,283 ZIP codes in this dataset. Within TX, it ranks 901 of 2,558.
Learn more
Before leaning on 75138's figures: local microclimates explains what one yard in Dallas can differ from the 75138 normal, while zone vs. frost date explains why Zone 8b and Dallas's frost date answer different questions.